java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:52:23,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:52:23,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:52:23,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:52:23,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:52:23,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:52:23,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:52:23,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:52:23,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:52:23,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:52:23,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:52:23,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:52:23,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:52:23,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:52:23,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:52:23,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:52:23,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:52:23,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:52:23,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:52:23,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:52:23,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:52:23,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:52:23,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:52:23,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:52:23,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:52:23,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:52:23,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:52:23,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:52:23,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:52:23,313 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:52:23,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:52:23,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:52:23,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:52:23,315 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:52:23,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:52:23,315 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:52:23,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:52:23,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:52:23,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:52:23,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:52:23,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:52:23,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:52:23,316 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:52:23,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:52:23,317 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:52:23,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:52:23,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:52:23,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:52:23,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:52:23,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:52:23,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:52:23,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:52:23,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:52:23,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:52:23,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:52:23,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:52:23,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:52:23,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:52:23,623 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:52:23,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:52:23,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:52:23,649 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:52:23,649 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:52:23,650 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label35.c [2019-10-13 21:52:23,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84576860d/830cc1e5fc90437eb27298260e95caa8/FLAG773de5d70 [2019-10-13 21:52:24,428 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:52:24,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label35.c [2019-10-13 21:52:24,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84576860d/830cc1e5fc90437eb27298260e95caa8/FLAG773de5d70 [2019-10-13 21:52:24,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84576860d/830cc1e5fc90437eb27298260e95caa8 [2019-10-13 21:52:24,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:52:24,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:52:24,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:52:24,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:52:24,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:52:24,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:52:24" (1/1) ... [2019-10-13 21:52:24,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a96d363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:24, skipping insertion in model container [2019-10-13 21:52:24,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:52:24" (1/1) ... [2019-10-13 21:52:24,599 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:52:24,690 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:52:25,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:52:25,560 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:52:25,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:52:25,885 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:52:25,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:25 WrapperNode [2019-10-13 21:52:25,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:52:25,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:52:25,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:52:25,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:52:25,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:25" (1/1) ... [2019-10-13 21:52:25,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:25" (1/1) ... [2019-10-13 21:52:25,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:25" (1/1) ... [2019-10-13 21:52:25,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:25" (1/1) ... [2019-10-13 21:52:26,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:25" (1/1) ... [2019-10-13 21:52:26,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:25" (1/1) ... [2019-10-13 21:52:26,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:25" (1/1) ... [2019-10-13 21:52:26,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:52:26,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:52:26,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:52:26,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:52:26,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:52:26,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:52:26,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:52:26,209 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:52:26,209 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 21:52:26,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:52:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:52:26,211 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 21:52:26,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:52:26,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:52:26,212 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:52:26,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:52:26,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:52:26,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:52:38,100 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:52:38,101 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:52:38,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:52:38 BoogieIcfgContainer [2019-10-13 21:52:38,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:52:38,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:52:38,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:52:38,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:52:38,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:52:24" (1/3) ... [2019-10-13 21:52:38,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f68d822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:52:38, skipping insertion in model container [2019-10-13 21:52:38,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:25" (2/3) ... [2019-10-13 21:52:38,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f68d822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:52:38, skipping insertion in model container [2019-10-13 21:52:38,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:52:38" (3/3) ... [2019-10-13 21:52:38,112 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label35.c [2019-10-13 21:52:38,124 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:52:38,134 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:52:38,147 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:52:38,187 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:52:38,187 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:52:38,187 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:52:38,187 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:52:38,188 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:52:38,188 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:52:38,188 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:52:38,188 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:52:38,220 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-13 21:52:38,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 21:52:38,227 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:38,228 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:52:38,229 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:38,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:38,236 INFO L82 PathProgramCache]: Analyzing trace with hash 648048493, now seen corresponding path program 1 times [2019-10-13 21:52:38,246 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:38,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320620300] [2019-10-13 21:52:38,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:38,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:38,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:52:38,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320620300] [2019-10-13 21:52:38,506 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:52:38,506 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:52:38,506 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414444233] [2019-10-13 21:52:38,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:52:38,512 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:52:38,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:52:38,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:52:38,532 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2019-10-13 21:52:45,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:52:45,214 INFO L93 Difference]: Finished difference Result 953 states and 1852 transitions. [2019-10-13 21:52:45,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:52:45,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-13 21:52:45,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:52:45,250 INFO L225 Difference]: With dead ends: 953 [2019-10-13 21:52:45,250 INFO L226 Difference]: Without dead ends: 702 [2019-10-13 21:52:45,266 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:52:45,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-13 21:52:45,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 430. [2019-10-13 21:52:45,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2019-10-13 21:52:45,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 821 transitions. [2019-10-13 21:52:45,413 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 821 transitions. Word has length 11 [2019-10-13 21:52:45,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:52:45,414 INFO L462 AbstractCegarLoop]: Abstraction has 430 states and 821 transitions. [2019-10-13 21:52:45,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:52:45,415 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 821 transitions. [2019-10-13 21:52:45,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-13 21:52:45,417 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:45,418 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:52:45,418 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:45,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:45,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2143491309, now seen corresponding path program 1 times [2019-10-13 21:52:45,420 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:45,420 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363311888] [2019-10-13 21:52:45,420 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:45,421 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:45,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:52:45,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363311888] [2019-10-13 21:52:45,581 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:52:45,581 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:52:45,582 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564686524] [2019-10-13 21:52:45,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:52:45,583 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:52:45,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:52:45,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:52:45,584 INFO L87 Difference]: Start difference. First operand 430 states and 821 transitions. Second operand 4 states. [2019-10-13 21:52:50,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:52:50,956 INFO L93 Difference]: Finished difference Result 1699 states and 3298 transitions. [2019-10-13 21:52:50,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:52:50,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-10-13 21:52:50,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:52:50,967 INFO L225 Difference]: With dead ends: 1699 [2019-10-13 21:52:50,967 INFO L226 Difference]: Without dead ends: 1274 [2019-10-13 21:52:50,969 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:52:50,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2019-10-13 21:52:51,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1249. [2019-10-13 21:52:51,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1249 states. [2019-10-13 21:52:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 2074 transitions. [2019-10-13 21:52:51,022 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 2074 transitions. Word has length 21 [2019-10-13 21:52:51,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:52:51,022 INFO L462 AbstractCegarLoop]: Abstraction has 1249 states and 2074 transitions. [2019-10-13 21:52:51,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:52:51,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 2074 transitions. [2019-10-13 21:52:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-13 21:52:51,025 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:51,025 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:52:51,025 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:51,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:51,026 INFO L82 PathProgramCache]: Analyzing trace with hash 42067521, now seen corresponding path program 1 times [2019-10-13 21:52:51,026 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:51,026 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732086461] [2019-10-13 21:52:51,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:51,027 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:51,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:52:51,103 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732086461] [2019-10-13 21:52:51,103 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:52:51,104 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:52:51,104 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678079803] [2019-10-13 21:52:51,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:52:51,105 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:52:51,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:52:51,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:52:51,106 INFO L87 Difference]: Start difference. First operand 1249 states and 2074 transitions. Second operand 5 states. [2019-10-13 21:52:55,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:52:55,925 INFO L93 Difference]: Finished difference Result 3799 states and 6456 transitions. [2019-10-13 21:52:55,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:52:55,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-13 21:52:55,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:52:55,942 INFO L225 Difference]: With dead ends: 3799 [2019-10-13 21:52:55,942 INFO L226 Difference]: Without dead ends: 2555 [2019-10-13 21:52:55,946 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:52:55,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2019-10-13 21:52:56,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 2077. [2019-10-13 21:52:56,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2077 states. [2019-10-13 21:52:56,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 3109 transitions. [2019-10-13 21:52:56,020 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 3109 transitions. Word has length 38 [2019-10-13 21:52:56,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:52:56,021 INFO L462 AbstractCegarLoop]: Abstraction has 2077 states and 3109 transitions. [2019-10-13 21:52:56,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:52:56,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 3109 transitions. [2019-10-13 21:52:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-13 21:52:56,029 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:56,029 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:52:56,029 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:56,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:56,030 INFO L82 PathProgramCache]: Analyzing trace with hash -673927150, now seen corresponding path program 1 times [2019-10-13 21:52:56,030 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:56,030 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216987147] [2019-10-13 21:52:56,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:56,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:56,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:56,371 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:52:56,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216987147] [2019-10-13 21:52:56,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266217919] [2019-10-13 21:52:56,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:52:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:56,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:52:56,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:52:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:52:56,638 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:52:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:52:56,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1462103274] [2019-10-13 21:52:56,817 INFO L162 IcfgInterpreter]: Started Sifa with 148 locations of interest [2019-10-13 21:52:56,817 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:52:56,826 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:52:56,841 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:52:56,842 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:52:57,107 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 56 for LOIs [2019-10-13 21:52:57,350 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2019-10-13 21:52:57,630 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2019-10-13 21:52:57,894 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2019-10-13 21:52:58,008 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6909 conjuctions. This might take some time... [2019-10-13 21:52:58,109 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2019-10-13 21:52:58,228 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6909 conjuctions. This might take some time... [2019-10-13 21:52:58,951 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:52:58,952 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 21:52:58,959 INFO L168 Benchmark]: Toolchain (without parser) took 34381.96 ms. Allocated memory was 138.9 MB in the beginning and 469.8 MB in the end (delta: 330.8 MB). Free memory was 97.0 MB in the beginning and 274.7 MB in the end (delta: -177.7 MB). Peak memory consumption was 346.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:58,960 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:52:58,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1306.24 ms. Allocated memory was 138.9 MB in the beginning and 209.2 MB in the end (delta: 70.3 MB). Free memory was 96.8 MB in the beginning and 123.0 MB in the end (delta: -26.2 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:58,962 INFO L168 Benchmark]: Boogie Preprocessor took 231.86 ms. Allocated memory is still 209.2 MB. Free memory was 123.0 MB in the beginning and 110.3 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:58,963 INFO L168 Benchmark]: RCFGBuilder took 11983.07 ms. Allocated memory was 209.2 MB in the beginning and 301.5 MB in the end (delta: 92.3 MB). Free memory was 110.3 MB in the beginning and 229.5 MB in the end (delta: -119.2 MB). Peak memory consumption was 124.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:58,964 INFO L168 Benchmark]: TraceAbstraction took 20851.94 ms. Allocated memory was 301.5 MB in the beginning and 469.8 MB in the end (delta: 168.3 MB). Free memory was 229.5 MB in the beginning and 274.7 MB in the end (delta: -45.2 MB). Peak memory consumption was 315.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:58,968 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1306.24 ms. Allocated memory was 138.9 MB in the beginning and 209.2 MB in the end (delta: 70.3 MB). Free memory was 96.8 MB in the beginning and 123.0 MB in the end (delta: -26.2 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 231.86 ms. Allocated memory is still 209.2 MB. Free memory was 123.0 MB in the beginning and 110.3 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11983.07 ms. Allocated memory was 209.2 MB in the beginning and 301.5 MB in the end (delta: 92.3 MB). Free memory was 110.3 MB in the beginning and 229.5 MB in the end (delta: -119.2 MB). Peak memory consumption was 124.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20851.94 ms. Allocated memory was 301.5 MB in the beginning and 469.8 MB in the end (delta: 168.3 MB). Free memory was 229.5 MB in the beginning and 274.7 MB in the end (delta: -45.2 MB). Peak memory consumption was 315.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...